import router from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css'// progress bar style
import { getToken } from '@/utils/auth' // getToken from cookie
import { getWorklist } from '@/utils/storage'
import { constantRouterMap } from '@/router'

NProgress.configure({ showSpinner: false })// NProgress Configuration

// permission judge function
function hasPermission(roles, permissionRoles) {
  if (roles.indexOf('admin') >= 0) return true // admin permission passed directly
  if (!permissionRoles) return true
  return roles.some(role => permissionRoles.indexOf(role) >= 0)
}

const whiteList = ['/login', '/auth-redirect']// no redirect whitelist

router.beforeEach((to, from, next) => {
  NProgress.start() // start progress bar
  if (getToken()) { // determine if there has token
    /* has token*/
    console.log('[permission]-[Has Token]')
    if (to.path === '/login') {
      console.log('[permission]-[Has Token]-[to /]')
      next({ path: '/' })
      NProgress.done() // if current page is dashboard will not trigger	afterEach hook, so manually handle it
    } else {
      console.log('[permission]-[Has Token]-[generate router]')
      if (store.getters.roles.length === 0) { // 判断当前用户是否已拉取完user_info信息
        store.dispatch('GetUserInfo').then(res => { // 拉取user_info
          const roles = res.data.roles // note: roles must be a array! such as: ['editor','develop']
          store.dispatch('GenerateRoutes', { roles }).then(() => { // 根据roles权限生成可访问的路由表
            router.addRoutes(store.getters.addRouters) // 动态添加可访问路由表
            // 动态添加worklist
            addWorklistToRouter()
            next({ ...to, replace: true }) // hack方法 确保addRoutes已完成 ,set the replace: true so the navigation will not leave a history record
          })
        }).catch((err) => {
          store.dispatch('FedLogOut').then(() => {
            Message.error(err || 'Verification failed, please login again')
            next({ path: '/' })
          })
        })
      } else {
        console.log('[permission]-[Has Token]-[there\'s already route]')
        // 没有动态改变权限的需求可直接next() 删除下方权限判断 ↓
        if (hasPermission(store.getters.roles, to.meta.roles)) {
          next()
        } else {
          next({ path: '/401', replace: true, query: { noGoBack: true }})
        }
        // 可删 ↑
      }
    }
  } else {
    /* has no token*/
    console.log('[permission]-[no token]')
    if (whiteList.indexOf(to.path) !== -1) { // 在免登录白名单，直接进入
      console.log('[permission]-[no token]-[white list]')
      next()
    } else {
      console.log('[permission]-[no token]-[redirect to login page]')
      // next(`/login?redirect=${to.path}`) // 否则全部重定向到登录页
      next(`/login`)
      NProgress.done() // if current page is login will not trigger afterEach hook, so manually handle it
    }
  }
})

router.afterEach(() => {
  NProgress.done() // finish progress bar
})

function addWorklistToRouter() {
  getWorklist().then(
    worklist => {
      const newItems = []
      for (var i = 0; i < worklist.length; i++) {
        const newItem = {
          path: worklist[i].workcard.workuid,
          component: () => import('@/views/workcard/workcard'),
          props: { workuid: worklist[i].workcard.workuid },
          name: worklist[i].workcard.workuid,
          meta: { title: worklist[i].workcard.workrelattrs.find(v => v.name === 'ID').value, noCache: 'true' }
        }
        newItems.push(newItem)
      }
      const route = constantRouterMap.find(r => r.name === 'workcards')
      // 添加routers并根据name去重
      route.children = route.children.concat(newItems).filter((obj, index, self) =>
        index === self.findIndex((t) => (t.name === obj.name)))
      router.addRoutes([route])
    }
  )
}
